bskk(1) on Linux
The text 3970b22fcf45, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
Bayesian estimation for SKK
Flags it lists
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-d -
-f -
-h -
-p -
-s -
-v